Do not use version 3.26 for modern UEFI BIOS files (usually .CAP or .ROM files over 4MB). For UEFI, you generally need MMTool version 4.50 or 5.xx.
One of the most common uses for MMTool 3.26 is updating the . Older BIOS versions often ship with outdated RAID firmware that lacks TRIM support in RAID mode, causing performance degradation over time. By extracting the existing RAID module (identified by the Device ID DEV_2822 or DEV_282a , Vendor ID VEN_8086 ) and inserting a newer version, you can add TRIM support and improve SSD longevity.
| | Recommended MMTool | Notes | | :--- | :--- | :--- | | Legacy AMI (non-UEFI) | 3.26 | The classic version; cannot open modern UEFI files. | | AMI Aptio IV (UEFI, older) | 4.50.0.23 | Works for Sandy Bridge through Haswell/Broadwell-era boards. | | AMI Aptio V (UEFI, modern) | 5.02.0025, 5.07, 5.1+ | Required for newer platforms (Skylake and beyond). | | Very recent BIOS (2023+) | Try latest (5.2+) | Even 5.0 versions may fail on the newest boards; use UEFITool instead. | mmtool+326zip
stands for AMI BIOS Module Management Tool . It is a Windows-based application used to view, extract, and insert modules within an AMI BIOS ROM file.
: Always keep an original, unmodified copy of your BIOS and ensure you have a recovery method (like a BIOS Flashback button or an external EEPROM programmer) before attempting to flash a modified file. from a BIOS file? Ozmosis - Page 4 - InsanelyMac Do not use version 3
Run mmtool.exe as Administrator. If you see "License Expired," copy the msimg32.dll from the zip into the same directory as the .exe. This bypasses the time bomb.
: Users can insert, extract, delete, or replace specific modules, such as updated RAID ROMs (e.g., Intel RAID v10.1) or Option ROMs for sound and video cards. Older BIOS versions often ship with outdated RAID
The "326zip" refers to the packed version of the executable. Enthusiasts and technicians seek this specific version because it is remarkably stable and perfectly tailored for the specific BIOS structure of the Aptio 4 generation.
Before you dive in, understand the landscape. ; it is a proprietary tool licensed to motherboard manufacturers for development purposes. Consequently, most MMTool downloads on the internet are unofficial, leaked, or reverse-engineered copies. This means:
Before attempting any hardware modification, ensure you have a fallback method—such as a dedicated physical EEPROM chip programmer (e.g., CH341A)—in case a flash attempt fails and bricks the system.
: It allows for the extraction of specific firmware blocks so they can be analyzed, shared, or patched in a hex editor before being re-inserted. Compression Support